Are transformers efficient?

[Oonrahnjay]

BH, Google "minisplit ceiling cassette" 

     Sure is a lotta them informations there.  That's gonna be harder to digest than a Buick!

[ArtGill]

Bruce, go to DaikinAC and look up FFQ09LVJU and download the Data sheet.  The ceiling cassette is about 12 inches thick.

Scott, go to http://www.220converters.com/store and search for THG-4000UD

Note:  These are heat Pumps without heat strips, so the heat becomes less efficient as the outside temperature gets lower.

Art

[Scott & Heather]

Art, the newer mini split heat pump's are so efficient they work  100% down to 5° and will produce heat down to -13°F


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[Oonrahnjay]

Bruce, go to DaikinAC and look up FFQ09LVJU and download the Data sheet.  The ceiling cassette is about 12 inches thick.

Scott, go to http://www.220converters.com/store and search for THG-4000UD

Note:  These are heat Pumps without heat strips, so the heat becomes less efficient as the outside temperature gets lower.

Art

    Thanks, Art.  All this is good info.  As I look at my bus, I realize that probably my best setup is going to be for one of the long, low, thin air handler/evaporator boxes.  One of those should fit right above the windshield, upper and lower.  And I had in mind that I'd go for two separate 120V "outside units" - redundant, simple.  But the idea of a 20 SEER single outside unit, with two evap units running off a transformer is starting to sound like a nice package.  After all, I do have two levels to provide cooling for and I've never thought that that was going to be easy.

[DoubleEagle]

Art, the newer mini split heat pump's are so efficient they work  100% down to 5° and will produce heat down to -13°F


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Wow, that is efficient. I had three Duo-Therm Heat Pumps back in the nineties that only worked down to about 40 degrees F, and then nothing. Two out of three failed completely within six months, so I returned them under guarantee and got my money back.